Reuben lighthall



R. LIGHTHALL. STEAM GENERATOR.

PATENED FEB. z, 1869.

im roveme'nt attached, and

REUBEN LIGHT-Brannon BRooKLYN, NEW YORK.

Lew-Parent 210.556,425, amd Femm 2, 1869. v

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T0 all whim it may concern.- l

' Beit known that I, Rumania L nfl-HALL, of Brooklyn, in thecountyof Kings, and 3 tateof'New York,

have inventedoertain new and useful Improvements in Steam-Boilers; and vI do hereby declare that the following is a full and exact description ofthe same, referenoe'being had to the accompanying drawings, and to thev letters of reference marked thereon, in which- 4 Figure 1 is a perspective view of a boiler with Vmy igiire 2, a vertical out section ot' the same. The Vpurpose and intent of my invention are to utilize' and make effective the gases that enter the returntubes or ilues of-a boiler that is constructed with such return-tubes or lues, by inflaming the gases that enter said vtubes or fines, by a proper admixture of' oxygen supplied by a; current of atmospheric air.

A' is the body of a boiler of ordinary form, having thei'urnace B, in which'the fuel is placedv tobe burned,

` and the lower sections of flues O from the same, en cling at the commencement of the back connection D.

E E are the lupper section of' fines that run from the back connection D to the uptake of the boiler.

F is the steam-chimney of the boiler, made in the ordinary form.- l

Gis a horizontal pipe lying .midway between the upper tier` of ilues, which may be supplied with -a` proper current of air by either natural or articial means, 'the 'supply to the same being regulated by a damper or by any other desired means.

H H are pipes Vthat lead from the air-pipe G to the rcentre of each of the return-hues, there being as many -of these pipes as there are lues in the return of the boiler, the purpose of these pipes being to supply oxytglen to the gases that pass through these dues, to iname the said gases, to utilize and economize the heat that would otherwise be wasted.

I'is a pipe attached to the bottom of the back connection, through which the carbonio-acid., gas may escape to the reservoir J, the said reservoirbeing kept lled with water, to condense and dispose of the said 83,5'

By' this arrangement I claim that a large saving in as it is a well-known fact that inthe fuel can be made ordinary boiler of the same form, thesegases are consumed at the top of the smoke-stack, being unutilzed in their passage through the boiler. This eiect is shown in innumerable instances by the destruction of the top of the smokestack, where these' gases areignited, and where the gases in their passage "through the boiler produce no beneficial eii'ect, the 'effect only .being shown at the top. of the smoke-stack. 4

` I am aware that many devices for the inammation..

of the escape gases have been devised and experimented upon, bu't'in most all cases they have been used in the boiler-furnace to iname the gases in their passage through the lower section of flues. This system I hold to be a wrong one, as the immediate el'ect ofthe re from that part of the boiler is amply sulicient for itspurpose, and in case the gases are there inflamed, I the effect of the same on the upper tier of flues isv nearly or 'entirely lost.

The same idea has been advaucedfor the inflammation of the gases at the back connection of the boiler, for the purpose of utilizing theA heat from the gases, but they only e'ect at that point thev heating of the back connection; without producing much of any eliect in the flues or tnbesin the return. n

None of the devices have hitherto effected the' purpose,lfor the reasons named,l as the resultant gases from the fumace-ire nequireto produce their 'best e'ect, to be inl'la'med and consumed iu the return-tubes or ilues, as is set forth in -the foregoing description.

What I claim as my invention, and desire to secure The construction of the air-pipe G with its branches H H, 86e., as set forth.

Also, the outlet I,at the bottom of the back connection, to allow the heavy gases" to fall to the reservoir'J, as herein set forth.-

REU'BEN LIGHTHA'LL.

Witnesses: i, v

FRANcIs S. Low, G. J. n n LA Freemans. 

